HOTDOG
From memory. The "eel" emergency light (electro luminescence) on a 744 is powered by trickle charged DC battery pack which is inverted up to 115V 400 htz AC. This power is supplied to the track which is made of some special fart gas mixed with plastic in ribbon form that when hit with AC it glows. In each strip 4 or 5 very thin copper conductors run to power the strip which when cut prevents the "eel" light from working. Cutting quite often happens when carpet guys hit the thin wires with their carpet knives. These wire are so thin I would never have thought a staple would work unless it was touching a copper wire to make the circuit. But as we have found out the luminescence material is conductive enough to make the system work when a split/cut is jumpered with a staple. Genius misguided but genius
The photo photoluminiscent system you mention similar to the tritium painted green dots on your watch face is not fitted to any QF long haul aircraft.
To alcohol, the cause of, and solution to, all of life's problems
Last edited by Bolty McBolt; 20th Jul 2007 at 03:43.